Multiple choice

Two thin blankets are warmer than a single blanket of same thickness as the two because

  1. the thermal conductivity is less than that of one

  2. some air sheet is enclosed in between them preventing heat flow

  3. the weight of two blankets is more than the one

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Two thin blankets are warmer than a single blanket of same thickness as the two because some air sheet is enclosed in between them preventing heat flow .

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